Paper/patches/server/0668-Put-world-into-worldlist-before-initing-the-world.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
Spigot still maintains some partial implementation of "tick skipping", a
practice in which the MinecraftServer.currentTick field is updated not
by an increment of one per actual tick, but instead set to
System.currentTimeMillis() / 50. This behaviour means that the tracked
tick may "skip" a tick value in case a previous tick took more than the
expected 50ms.

To compensate for this in important paths, spigot/craftbukkit
implements "wall-time". Instead of incrementing/decrementing ticks on
block entities/entities by one for each call to their tick() method,
they instead increment/decrement important values, like
an ItemEntity's age or pickupDelay, by the difference of
`currentTick - lastTick`, where `lastTick` is the value of
`currentTick` during the last tick() call.

These "fixes" however do not play nicely with minecraft's simulation
distance as entities/block entities implementing the above behaviour
would "catch up" their values when moving from a non-ticking chunk to a
ticking one as their `lastTick` value remains stuck on the last tick in
a ticking chunk and hence lead to a large "catch up" once ticked again.

Paper completely removes the "tick skipping" behaviour (See patch
"Further-improve-server-tick-loop"), making the above precautions
completely unnecessary, which also rids paper of the previous described
incompatibility with non-ticking chunks.
2024-09-19 16:36:07 +02:00

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2.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Tue, 22 Feb 2022 14:21:35 -0800
Subject: [PATCH] Put world into worldlist before initing the world
Some parts of legacy conversion will need the overworld
to get the legacy structure data storage
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 413a37991d1df6314dd9938e5eb5f28f5b69efb8..e7d6f4e6ac41b183c702d5195e4f94136c22b000 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -643,9 +643,10 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
}
worlddata.setModdedInfo(this.getServerModName(), this.getModdedStatus().shouldReportAsModified());
+ this.addLevel(world); // Paper - Put world into worldlist before initing the world; move up
this.initWorld(world, worlddata, this.worldData, worldoptions);
- this.addLevel(world);
+ // Paper - Put world into worldlist before initing the world; move up
this.getPlayerList().addWorldborderListener(world);
if (worlddata.getCustomBossEvents() != null) {
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 9a513feb638c913ee67ff00036efe8d27c3eb5fb..65cb367f0824b4045c436dd66809dd9a3eeccbcd 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1332,10 +1332,11 @@ public final class CraftServer implements Server {
return null;
}
+ this.console.addLevel(internal); // Paper - Put world into worldlist before initing the world; move up
this.console.initWorld(internal, worlddata, worlddata, worlddata.worldGenOptions());
internal.setSpawnSettings(true, true);
- this.console.addLevel(internal);
+ // Paper - Put world into worldlist before initing the world; move up
this.getServer().prepareLevels(internal.getChunkSource().chunkMap.progressListener, internal);
internal.entityManager.tick(); // SPIGOT-6526: Load pending entities so they are available to the API